Automatic temperature and humidity regulation – Ventilator type – Electrically actuated
Patent
1995-05-01
1996-07-09
Joyce, Harold
Automatic temperature and humidity regulation
Ventilator type
Electrically actuated
137802, 236 51, 415910, 417326, 454256, 454338, F24F 11053
Patent
active
055336680
ABSTRACT:
A bi-directional airflow controllable system for controlling flow of air through an air circulating system to at least one zone an air temperature of which is to be controlled is coupled to an airflow duct to aid or oppose airflow throughout the duct and the system to the zone. The bi-directional airflow controllable system includes a fan positioned to interact with air moving through the system and the duct. The fan is coupled to a motor to be energized to drive the fan in a forward or reverse direction. The fan when driven by the energized motor in a forward direction creates air pressure from the fan to oppose the flow of air from the airflow duct. The fan when driven by the energized motor in a reverse direction aids the flow of air from the airflow duct. A bi-directional airflow control unit is electrically coupled to the motor. The bi-directional airflow control unit is responsive to a desired temperature in the zone to cause the motor to be energized in a forward direction to oppose flow through the system until the desired zone temperature is attained. The control unit is additionally responsive to the desired temperature in the zone to cause the motor to be energized in a reverse direction to aid the airflow through the system until the desired zone temperature is attained.
REFERENCES:
patent: 3320406 (1967-05-01), Wainwright
patent: 3776279 (1973-12-01), O'Connor, Jr.
patent: 4479604 (1984-10-01), Didner
patent: 4530395 (1985-07-01), Parker et al.
patent: 4969508 (1990-11-01), Tate et al.
patent: 5271558 (1993-12-01), Hampton
patent: 5404934 (1995-04-01), Carlson et al.
Hampton Electronics
Joyce Harold
Williamson Harold A.
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